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The tangent at a point 'P' of a curve me...

The tangent at a point 'P' of a curve meets the axis of 'y' in N, the parallel through 'P' to the axis of 'y' meets the axis of X at M, O is the origin of the area of `Delta MON` is constant then the curve is (A) circle C) ellipse (D) hyperbola (B) parabola

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